The "left-side are unlucky" thing affects the Latin example as well as the Greek, at the very least in the way that English derived words get used: compare "dex

The "left-side are unlucky" thing affects the Latin example as well as the Greek, at the very least in the way that English derived words get used: compare "dexterous" (modern English connotations of "able, agile") versus "sinister" (modern English connotations of "evil, subversive"). It's an interestingly deep rabbit hole in language etymology just how much "left" gets besmirched and "right" gets positive connotations. (The fact that "right" is also a synonym in English for "correct" being another bit of evidence.)